Apparatus for gathering glass



Dec. 16, 1930. K. E. PEILER 1,785,209

APPARA'IJUS FOR GATHERING GLASS Filed April 21.1925

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Patented Dec. 16, 1930 UNITED sTA'TEs PATENT OFFICE KARL E. PEILER, Ol' WEST. HARTFORD, CONNECTICUT, ASSIGXNOR TO HARTFORD-EMPIRE COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF DELAWARE APPARATUS FOR GATHERING GLASS Application led April 21, 192.5. Serial No. 24,789.

My invention relates to suction-fed molds for making glassware, and its object is to provide an im roved severing means for use with molds o the Owens suction-fed type.

Various troubles have been experienced with suction-'fed machines in respect to cutting off the sur lus glass at the bottom of the parison mol after the gathering operation. .The arison mold is made in halves, and it is di cult to align the halves so that a shearing knife can be passed evenly across the joint. If there is an imperfect 'oint, the glass tends to smear between the nife and the bottom of the mold, causing unsightly markings on the bottom of the ware. A better shearing action has been obtained by inserting a hardened steel piece into the bottom of each of the mold halves to provide a cuttin edge for the knife to work against. This oes not solve the diiculty, as it is extremely diiiicult to maintain the proper alignment between the cutting edge of the knlfe and the junction of the halves of the steel ring.

Accor ing to my present invention, I overcome the above-mentioned diiiculties by providing the bottom of the mold with a onepiece ring with which the cutting off knife cooperates. This ring is preferably composed of hardened steel, and it forms one member of a pair of shears, the other member l of the shears 4being the usual cutting-off knife. The severing ring and the knife may be so mounted, guided and shaped with respect to each other as to secure a clean, eicient cut, thereby avoiding the troubles above mentioned.

A further advantage of this construction is that it provides means to compensate for any increase in the size of the mold cavity that may be caused by wear. In such cases, the bottom ring may be planed so as to reduce the capacity of the bottom ring suiiciently to balance the increase in the size of the body-mold cavity, the shearing level being correspondingly adjusted.

In the accompanying drawings:

Figure 1 is a central vertical sectional view of-a suction mold and its cooperating parts per surface 19 o in the position of gathering a mold charge from a supply of molten glass;

Fig. 2 is a view of the lower portion of Flg. 1, showing the mold raised after obtaining a mold charge and showing the unsevered lass between the mold and the gathering poo Fig. 3 is a similar view showing the severance of the glass; and f Fi 4 is a similar View showing the co1- lected and severed mold charge with the severing devices retracted. V

In the drawings, the numerals 10 indicate the cooperating halves of a, parison mold having a mold cavit 11 for forming a mold charge 12 collecte by suction from a gathering pool 13. The mold is provided at its upper portion with neck-forming means including a neck rin 14 and a neck plunger 15, and is also provi ed with 'a suction head 16 for drawing the molten glass into the mold cavit 11. A one-piece severing ring 20, with whic my invention is mainly concerned, is arranged for periodic cooperation with the bottom of the mold and when in position beneath the mold., the opening in this ring forms a continuation ofthe mold cavity. The mold is provided with the usual leak grooves 17 which are located in the meeting i surfaces of the mold halves 10 but which, for convenient illustration, are shown in Fig. 1 of the drawing as being turned ninety degrees from their actual position. The grooves 17 connect the suction head 16 with an annular leak groove 18 formed in the u the severing ring 20 to aid in maintainin suction within the mold cavity 11. This' eak groove may be formed in the mold instead of in the ring, if desired.

A shearing knife 23 is arranged to sweep across the bottomi surface 24 of the shearing ring 20 and the edge of this knife cooperates with the inner edges 25 of the ring 20 to sever the depending portion 22 of molten glass from the bottom of the ring after the gather has been collected. A

In operation, the ring 2O is brou htagainst the lower end of the mold, so that r the time it becomes a portion of the mold. The mold and the ring 20 are then lowered to the surface of the gathering pool, as shown inFig.

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1, and the mold is filled with glass in the usual manner, by suction applied bythe head 16. The mold 9 and the severing ring 20 are then raised from the pool 13, and the surplus glass is sheared off by moving the shear blade 23 across and in contact with the ring 20. Fig. 3 shows the completion of this severing 0peration. The knife 23 is then withdrawn from beneath the ring 20, and the ring is lowered away from the mold.

If desired, the m'old, the ring and the knife may be separated by lifting the mold from the ring or by lowering the knife and the ring together before retracting them. In any case, the ring and the knife are finally brought to the retracted position shown in Fig. 4, leaving the parison in the mold, free for further manipulation.

The ring 20 and the knife 23 may be arranged to approach the mold from opposite sides, as shown in the drawing, or they may both be mounted at one side of the mold. The mechanism for reciprocating these parts and said annular member is 1n cooperative relation with the receptacle.

3. A split suction glass gathering receptacle for g ass working, comprising cooperating longitudinal receptacle halves a one ieee annular severing member provided wit an orifice ada ted to be moved into and out of vertical alignment with the receptacle cavity and to be vertically reciprocated into and out of position to supplement the receptacle cavity, and a reciprocable shearing member adapted to be moved across the bottom surface of the annular member in synchronism with the movements of the receptacle.

Signed at Hartford, Conn., this 17th day of April, 1925.

KARL E. PEILER.

` moving them vertically at the proper times is not illustrated herein and may be of any convenient construction.

The above-described operation may obviously be varied by raising and lowering the gathering p'ool to bring the glass periodically to the level of the bottom' ring of the mold, instead of lowering and lifting the mold and its attachments.

This invention is not limited to the details of construction shown herein, but may' be modified as desired within the scope of the appended claims. l

I claim as my invention:

1. A split suction mold for glass working, comprising cooperating mold halves, an inte ral severing member provided with an orifice adapted to be moved horizontally into and out of vertical alignment with the m'old cavity and adapted to be vertically reciprocated into and out of cooperative engagement with said mold, and a reciprocable shearing knife mounted independently of the severing member and adapted to move across the bottom surface of said member to sever surplus glass from the glass collected in said mold. v

2. A split suction gathering receptacle for glass working, comprising cooperating 1ongitudinal receptacle halves, a separate one piece annular severing member adapted to be moved into cooperative 'relation with the lower end of said receptacle and having an opening therein adapted to form a continuation of the receptacle cavity, said receptacle and said severing member being adapted t0 be separated by a substantially vertical bod ily movement of one of them with respect to the other, and a reciprocable shearing member adapted to move across the bottom surface of said annular member in synchronism with the movements of the receptacle while 

